RSX-11

RSX-11 is a discontinued family of multi-user real-time operating systems for PDP-11 computers created by Digital Equipment Corporation. In widespread use through the late 1970s and early 1980s, RSX-11 was influential in the development of later operating systems such as VMS and Windows NT.

This article is about the operating system family. For other uses of RSX, see RSX (disambiguation).
RSX-11
RSX-11M-Plus 4.6 running on the SIMH emulator.
DeveloperDigital Equipment Corporation
Written inMACRO-11, BLISS
Working stateDiscontinued
Source modelClosed source; kernel source code included
Initial release1972 (1972)
PlatformsPDP-11
InfluencedOpenVMS
Influenced byRSX-15
Default
user interface		DCL and MCR Command-line interface
LicenseProprietary

As the original Real-Time System Executive name suggests, RSX was designed (and commonly used) for real time use, with process control a major use. It was also popular for program development and general computing.

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